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They weren't losing. The leadership of the nation of Kalizal was not losing. They'd survived generations of outright warfare with their neighbors, the people of Alv. They'd build their cities of black rock on the faces of dormant volcanos, and used the deadly, shifting shale of the upward paths as their defense. Their walls were imposing black obelisks that stood out against the smoke-filled air of this world, appearing like monoliths as one drew close, warding against any attack. The ballistas, the trebuchets, the boiling and flaming oil, the rock-falls... they had numerous defenses to rain down on those damn Alvian raids.
Alv... The raiders. The steppe-folk, all black chainmail and deer-mounted bowmen, throwing-bombs and spears. They were notorious for their lightning assaults, their decimation of trade routes. Nobody could remember how long the two nations had been at war on this dying world, this place of black rock and pluming lava. Nobody could remember how the wars had started.
Kalizal had prepared an assault to end all assaults: a war-party of their own. One that would ride down their mountains, a rare descent from their fortresses of steam and churning smoke. Their soldiers would leave the safety of their walls, the thump of their machinery, and encircle the Alvian capital of Alvar at dawn, when the raiders were likely to be only just returning. They'd prepare, and... Well.
The military leadership hadn't understood, at first. Disease? (they'd asked.) A flood, a fire?
Eaten. They were processing this when the horns began to blow, discordant and deafening, filling the city. The walls all went on alert at once. The leadership--suspecting an Alvian counter-attack--rushed to the walls.
What they found was... monsters. Beasts the likes of which this rocky world had never seen. Monstrosities with scything limbs and glowing eyes, slavering jaws--sometimes more than one--and a savagery unmatched by even the Rock Wolves to the north. The beasts tried the walls. Some of them made it over--climbing, flying. They wreaked havoc. By the time the ballistas and soldiers could take each out, circles of massacred soldiers and civilians were piled in circles of blood around their corpses.
The rest of the beasts circled back, stymied by the walls.
Kalizal's own army, still returning from the field, caught the monsters from behind. It didn't matter. The gates were closed, and could not open. While many of the beasts were cut down, the soldiers were forced to retreat. And the monsters followed them. No scouts could reach them, and the leadership--watching with dismay as many of the beasts peeled away from the walls to hunt (there could be no other word for it--it was no real battle)--had to assume the army was either dead, or fled.
But they were not losing.
They had been at war for generations. Their livestock, bred from the creatures of the volcanic fields; their underground farms, lit by lava-light... these had kept their cities alive for years while under siege. The black, smooth walls still stood. The burning oil still poured, and mined rocks still rained down. The beasts had fallen, one by one, though far too many yet remained.
All they had to do was survive. All they had to do was trust in their walls.
The beast paused, wracking its brain, consulting the orders it was meant to pass on. Loose orders, though; there was no real hierarchy here. Just demons, unleashed.
Enter: Gravedigger, a creature purpose-built to destroy Kalizal.
The city wasn't losing... yet.
@Gravedigger